Lock



NOV. 26, 1935. I c I A ETAL 7 2,022,070

LOCK

Filed March 13, 1953 2 Sheets-Sheet 2 BY mjfwra Patented Nov. 26, 19 35 LOCK Clarence L. Williams and Earl M. Simmons, Jackson, Miss., assignor' of one-third to Knox M..

Broom, Jackson, Miss.

Application March 13, 1933, Serial No. 660,588

8 Claims. (Cl. 70-47) The invention relates to a lock and more especially to pin tumbler locks.

[The primary object of the invention is the provision of a lock of this character, wherein the pin tumblers are so disposed within the lock body that a particular key isrequired so that the latter will displace the tumblers at three sides of the lock body and this key is of a unique type, while the body of the lock carries a safety plate-for baflle which frustrates any attempt on the part ofan unscrupulous person'in effecting the manipulation of any of the tumblers to permit the working of the lock, thereby rendering such lock substantially theft-proof and only workable with the key provided therefor.

Another object of the invention is the provision of a lock of this character, wherein the keyway therein is divided so that the pin tumblers contained within the lock are 'not accessible to I an instrument for the manipulation. thereof to. free the lock and such lockcan only be manipulated by the key matched therewith and such' lock is substantially theft-proof. v

A further object of the invention, is the provision of a lock of this character, wherein the or all of-such tumblers may be of the double in-, terfitted pin type, thus making it practically impossible for manipulation of the lock without the use of the key pertaining thereto, the pin tumblers'being disposed in a novelmanner within the look so as to be incapable of being picked surreptitiously.

A still further obriect of the invention is the provision of a lock-of this character which is ex-'- .tremely simple in'construction, thoroughly reliable and eflicacious in its operation, strong, durable, and inexpensive to manufacture.

With these and other objects in view, the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter more fully described in detail,. lustrated in the accompanying drawings, which 5 disclose the preferred embodiment of the inven- "tion, and pointed out in the claims hereunto appended. p

In the accompanying drawings:

, Figure 1 is a front elevation of the l ck con- 50. structed in accordance with the inventic l.

\\ Figure- 2 is a fragmentary vertical longitudinal sectional view'thereoi. I w

K Figure 3 is a sectional view on the line 3-3 of Figure 2 .lookingin thedirection' of the arrows.

55 Figure 4.is a view, similar to Figure 3 showing pin tumblers include a novel construction as one I fragmentarily the key for the lock inserted therein. x Figure 5 is a perspective view of the key plug,

' the same being partly broken away to show in detail the baffle in the keyway or slot.

5 Figure 6 is a side elevation of the key for lock.

Figure 7 is an enlarged fragmentary sectional view similar to Figure 2 with the key inserted in the plug and the outermost pin tumblersioper 10 ated upon thereby.

Figure 8- is a view similar to Figure 'l with the key in the position as shown in Figure-4."-

Figure 9 is an enlarged vertical transverse sectional view through the lock with the key therein.

Figure 10 is a view similar to Figure 9.

Siniilar .reference' characters indicate corresponding parts, throughout the several views in the drawings. Referring to the drawings in detail, A designates generally the lock casing or what might be more properly termed the tumbler case of a pin lock, In the plug and H -the ordinary two-part spring actuated pin tumblers which normally look the plug against movement in the case. The

plug III is provided with the usual ,key slot II.

The pin tumblers ll i'n-a series are arranged superposed with respect to the slot l2, while separate series of such pin tumblers are arranged at opposite sides of theslot. The series B may include one or all of double interfi tted springactuatedtumbler pins I3 and 14' respectively, and

likewise the series. C and D may include one or all of the double interfitted spring actuated tumbler .pins l5 and lfi'respectively. Itsis pre'ferable to havevthe series 0 and D respectively arranged close to opposite ends of the case A. It is of course understood that the tumblers II and. those of the series C and D have their keyengaging ends beveled or rounded. These tumblers 40 operate through suitable ways ll therefor both in the case A and the plug ill for actuation by the key l8.

"The key l8 at its blade l9 hasthe usual edge notches in for the setting of the pin tumblers-ll of the series B, while opposite sides of said blade have. the depressions or cavities 2| therein at' matched localities thereof with the series C and D of tumbler pins so that the latter will be prop; erly set to permit the turning of the plug If on the complete insertion of the key in the slot IZ therein within the case A. l

Inset-from the entrance endof the slot and disposed crosswise thereof within the plug I0 is a baflie.or guard 22 which eliminates any apparcut possibility of the insertion of an instrument in the slot I! to gain access to the series of. tumblers for the manipulation thereof to free the plug in for the turning thereof and in this man- 5 ner, as well as in association with the series 01' tumblers B, C, and D, the said lock is rendered substantially theitproof.'

The keyds formed with the bifurcation a longitudinally thereof and opens through the tree end of its blade so that such blade will clear I2 beiore the plug Ill can be turned in the'case A.

0 Thus it will be seen that the plug III is triple locked, and additionally, such triple lock is guarded from surreptitiouscontrol or'manipula tion.

I havereferred to series or sets of tumbler pins B, C and D, but it is understood that each of said series or sets B, C and D may comprise but one tumbler pin assembly each within the meaning of the claims.

What is claimed is:

1. In a pin tumbler lock construction a tumbler case, a key plug'and three series or pin tumblers fitted within the case and plug, a guard inset within, the plug and disposed crosswise of a key slot in said plug, one series oi! tumbler pins -being disposed uppermost of the slot and the other series being disposed laterally at oppomte sides of the slot, the side series of tumbler pins being disposediore and aft oI the of side tumbler pins being adjacent the top oi. the plug andthe other adjacent the bottom 01 the plug. 2. In a pin tumbler lock construction, a tumbler case, a key plug and three series 01' pin tumblers fitted within the case and plug, a guard a key slot in said plug, one series or tumbler pins being disposed uppermost of the slot and the other series being disposed laterally at opposite plug, one set inset within the plug and disposed crosswise oi.

' other adjacent the bottom of the plug, and at 15 oi side tumbler pins being adjacent the top of theplug and the other adjacent the bottom of the plug, and at least one of the tumbler pins oi. each series comprising interiltted telescopical-' 1y adjustable pin sections and spring actuated.

4. In a pin tumbler lock construction, a tumbler case, a key plug and three series of pin tumblers fitted within the case and plug,- of a guard inset within the plug and disposed crosswise of a key slot in said plug, one series of tum- 1Q bler pins being disposed uppermost of the slot and the other series being disposed laterally at opposite sides of the slot, one set of side tumbler pins being adjacent the top oi-the plug and the least one of the tumbler pins of each series being formed or interfitted telescopically adjustable pin sections and springactuated.

5. In a pin' tumbler lock construction, a tumbler case, a key plug, two series of pin tumblers 2 fitted within the case and plug, a guard inset within the plug and or a key slot in said plug, said series of tumbler pins being disposed laterally at opposite sides 01 the slot and m. planes substantially parallel withsaid 5 guard; and one series of tumbler pins being above the plane of said guard and the other below the plane of the same. a r

- 6. In a pin tumbler lockconstruction, a tumbler case, a key plug having two series of pin 3 tumblers fitted within the case and plug, a guard inset within the plug and disposed crosswise oila key slot in said plug, said series of tumbler pins being disposed laterally at opposite sides of the slot and lying in planes substantially parallel sides of the slot, one set of side tumbler pins being adjacent the topof the plug and the other adjacent the-bottom of the plug.

3. In a pinetumbler lock construction, a tumbler case, a key plug. and three series 01' pin tumblers fitted within the case and plug, a guard insetwithin the plug andedisposed crosswise oi. a key slot in said plug, one series of tumbler pins being disposed uppermost oi the slot and the other series being disposed laterally at opposite sides of the slotj'the side series being Ioreand aft of c0 theplus, o e set of tumbler pins with said guard, one series oif tumbler pins being above the plane of said guard and the other below the plane of the same, and'one tumbler pin series being in the fore part of the plug and,-the other in the rear part thereof.

'7. In a pin tumbler lockconstruction, a tum bler case, a key plug having a key slot, two series of pin tumblers fitted within the case and plug, said respective series of tumbler pins being dise posed laterally at opposite sides of the key slot in diiIerent planes, and a guard spanning said key slot and interposed between said two series 'of pin tumblers.

a. In a pin tumbler lock construction, a tumbler'case, a key plug having a key slot, at least 7 points inthe direction of theheight of said slot-{5:5

and a guard transversely spanning said slot' and interposed between the :inner ends of said pin tumblers which areat diflerent sides of said slot.

: CLARENCE L. WILLIAMS. 

